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Prune power: study tests if dried plums boost bone health in older women

NCT ID NCT07222111

Knowledge-focused Sponsor: Indiana University Source: ClinicalTrials.gov ↗

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Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
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Paused for now. It may or may not start again.
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Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
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Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

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Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

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Status unknown
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First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at how eating dried plums (prunes) might help reduce bone loss in women after menopause. Researchers want to know if prunes change immune cell function and gut bacteria. Thirty women aged 60-75 will eat prunes or their normal diet for four weeks at a time, and provide blood and stool samples. The goal is to understand the connection between diet, gut health, and bone strength.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 30 people

The number the study aims to enrol. It can still change while the study runs.

Started

Sep 2025

Expected to finish

Aug 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

60 to 75 years

Sex

Female participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * women 60-75 years of age at the start of the study; * 12 or more consecutive months without a menstrual period; * willing to include dried plums in their daily diet and collect fecal samples at four time points; * ambulatory without assistance; * capacity to give informed consent. Exclusion Criteria: * women who have been on medications known to alter bone or calcium metabolism (e.g., oral bisphosphonates, raloxifene, denosumab, intermittent parathyroid hormone, growth hormone) within 12 months of starting the study. Prior use of intravenous bisphosphonates at any time. * women who have been on hormone replacement therapy, steroids (i.e., glucocorticoids), biologics, or chronic NSAID within 3 months of starting the study. * women with a previous diagnosis of osteoporosis (i.e., BMD T-score or history of vertebral fracture or fragility fractures of hip, wrist, humerus after the age of 50 yr) or other metabolic bone disease (e.g., osteomalacia or osteogenesis imperfect), renal disease, stroke, heart attack, type 2 diabetes, liver disease or autoimmune diseases (e.g., rheumatoid arthritis, systemic Lupus erythematosus, type 1 diabetes mellitus, IBD) that could affect bone metabolism or T cell biology will be excluded. * women who have undergone treatment for cancer within 12 months of starting the study * women who have been taking prebiotic or probiotic supplements or natural products that have estrogen-like effects in the past 3 months * women who smoke, have a BMI \>40 kg/m2 or \<18.5 kg/m2, or consume \>2 alcoholic drinks per day * women who regularly consume dried plums or prune juice (\>1 serving weekly).

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Dried plum and immune function T cell response to dried plum Vitamin D influence on immune response

How to take part

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  1. The places running it

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  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

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Contacts and locations

Locations

  • IU Health University Hospital Clinical Research Center

    RECRUITING

    Indianapolis, Indiana, 46202, United States